Plaster of Paris activated supersulfated slag cement |
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| Authors: | VP Mehrotra ASR Sai PC Kapur |
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| Affiliation: | 1. Dept. of Materials Science and Mineral Engineering University of California, Berkeley, CA 94720, U.S.A.;7. Dept. of Civil Engineering, Indian Institute of Technology, Kanpur - 208016, India;71. Dept. of Metallurgical Engineering, Indian Institute of Technology, Kanpur - 208016, India |
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| Abstract: | Hydration and strength behavior of supersulfated cement produced by activating a granulated Indian blastfurnace slag by plaster of Paris has been investigated. It is shown that plaster of Paris is a better activator than the conventional hard burnt gypsum (anhydrite) at least for a class of blastfurnace slags which are ordinarily considered less than ideal for this purpose. The setting characteristics of the plaster of Paris activated slag were controlled by small additions of a set retarder which does not adversely affect the strength properties of the cement. X-ray analysis and DTA have been used to identify the hydration products, interpret the strength data, and to compare the plaster of Paris activated cement with anhydrite activated slag cement. |
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